--- a/handouts/pep-ho.tex	Mon Dec 25 01:10:55 2023 +0100
+++ b/handouts/pep-ho.tex	Fri Feb 23 11:31:36 2024 +0000
@@ -124,7 +124,7 @@
 
     
 \begin{document}
-\fnote{\copyright{} Christian Urban, King's College London, 2017, 2018, 2019, 2020, 2021, 2022, 2023}
+\fnote{\copyright{} Christian Urban, King's College London, 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024}
 
 %\begin{tcolorbox}[breakable,size=fbox,boxrule=1pt,pad at break*=1mm,colback=cellbackground,colframe=cellborder]
 %  abd
@@ -152,7 +152,8 @@
 the myriads of Java libraries. Unlike Java, however, Scala often allows
 programmers to write very concise and elegant code.  Some therefore say
 ``Scala is the better Java''.\footnote{from
-\url{https://www.slideshare.net/maximnovak/joy-of-scala}} 
+  \url{https://www.slideshare.net/maximnovak/joy-of-scala}, though this might
+be outdated as latest versions of Java are catching up somewhat} 
 
 A number of companies---the Guardian, Dualingo, Coursera, FourSquare,
 Netflix, LinkedIn, ITV to name a few---either use Scala exclusively in
@@ -1937,10 +1938,12 @@
 
 \subsection*{Conclusion}
 
-I hope you liked the short journey through the Scala language---but remember we 
-like you to take on board the functional programming point of view,
-rather than just learning another language. There is an interesting
-blog article about Scala by a convert:
+I hope you liked the short journey through the Scala language---but
+remember we like you to take on board the functional programming point
+of view, rather than just learning another language: Immutable
+functions are easier to trust, because they the same output on the
+same input. For the same reason they are easier to test and debug.
+There is an interesting blog article about Scala by a convert:
 
 \begin{center}
 \url{https://www.skedulo.com/tech-blog/technology-scala-programming/}